From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anson.Huang@nxp.com Subject: [PATCH] ARM: dts: imx7d-sdb: Make SW2's voltage fixed Date: Wed, 29 May 2019 14:50:56 +0800 Message-ID: <20190529065056.27516-1-Anson.Huang@nxp.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Linux-imx@nxp.com List-Id: devicetree@vger.kernel.org From: Anson Huang On i.MX7D SDB board, SW2 supplies a lot of peripheral devices, its voltage should be fixed at 1.8V. The commit 43967d9b5a7c ("ARM: dts: imx7d-sdb: Assign corresponding power supply for LDOs") assigns SW2 as the supplier of vdd1p0d, and when its comsumers pcie-phy/mipi-phy try to set the vdd1p0d to 1.0V, regulator core will also set SW2 to its best(min) voltage to 1.5V, and it will lead to board reset. This patch makes SW2's voltage fixed at 1.8V to avoid this issue. Fixes: 43967d9b5a7c ("ARM: dts: imx7d-sdb: Assign corresponding power supply for LDOs") Reported-by: Leonard Crestez Signed-off-by: Anson Huang --- arch/arm/boot/dts/imx7d-sdb.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts index efc83bc..a5365b8 100644 --- a/arch/arm/boot/dts/imx7d-sdb.dts +++ b/arch/arm/boot/dts/imx7d-sdb.dts @@ -263,8 +263,8 @@ }; sw2_reg: sw2 { - regulator-min-microvolt = <1500000>; - regulator-max-microvolt = <1850000>; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; regulator-boot-on; regulator-always-on; }; -- 2.7.4